Cloth Seal, Dyer's One-Part Seal, CEZ, Image & Found by Nick Blight.
Found near Barnstaple North Devon , 14mm.
Privy mark, cross patriarchal with CE ligature and Z incorporated // 2
Dyers one-part (bulla type) seal, Very similar to those shown in Fig.37 in Geoff Egans 'Lead Cloth Seals and Related Items in the British Museum' which he categorises as a dyer's one part seals found ‘in some numbers ... from Trig Stairs to London Bridge’. He dates them from the late 16th to 17th centuries.
Interestingly this is the second of these specific seals to show an incised number on the back - most are reported to be blank. Also most are found in London on the Thames foreshore.